Update cheatsheets

tldr/linux/portageq

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# portageq
+
+> Query for information about Portage, the Gentoo Linux package manager.
+> Queryable Portage-specific environment variables are listed in `/var/db/repos/gentoo/profiles/info_vars`.
+> More information: <https://wiki.gentoo.org/wiki/Portageq>.
+
+- Display the value of a Portage-specific environment variable:
+
+`portageq envvar {{variable}}`
+
+- Display a detailed list of repositories configured with Portage:
+
+`portageq repos_config /`
+
+- Display a list of repositories sorted by priority (highest first):
+
+`portageq get_repos /`
+
+- Display a specific piece of metadata about an atom (i.e. package name including the version):
+
+`portageq metadata / {{ebuild|porttree|binary|...}} {{category}}/{{package}} {{BDEPEND|DEFINED_PHASES|DEPEND|...}}`

tldr/stdbuf

@@ -10,12 +10,12 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Change `stdin` buffer size to 512 KiB:
 
-`stdbuf --input={{512K}} {{command}}`
+`stdbuf --input=512K {{command}}`
 
 - Change `stdout` buffer to line-buffered:
 
-`stdbuf --output={{L}} {{command}}`
+`stdbuf --output=L {{command}}`
 
 - Change `stderr` buffer to unbuffered:
 
-`stdbuf --error={{0}} {{command}}`
+`stdbuf --error=0 {{command}}`

tldr/truncate

@@ -10,20 +10,20 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Set a size of 10 GB to an existing file, or create a new file with the specified size:
 
-`truncate --size {{10G}} {{filename}}`
+`truncate --size 10G {{path/to/file}}`
 
 - Extend the file size by 50 MiB, fill with holes (which reads as zero bytes):
 
-`truncate --size +{{50M}} {{filename}}`
+`truncate --size +50M {{path/to/file}}`
 
 - Shrink the file by 2 GiB, by removing data from the end of file:
 
-`truncate --size -{{2G}} {{filename}}`
+`truncate --size -2G {{path/to/file}}`
 
 - Empty the file's content:
 
-`truncate --size 0 {{filename}}`
+`truncate --size 0 {{path/to/file}}`
 
 - Empty the file's content, but do not create the file if it does not exist:
 
-`truncate --no-create --size 0 {{filename}}`
+`truncate --no-create --size 0 {{path/to/file}}`